AS1FGHM3/H

Overview

The AS1FGHM3/H is a fast recovery avalanche rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a single-phase configuration housed in the DO-219AB (SMF) surface-mount package. The device supports a maximum repetitive peak reverse voltage of 800 V and an average forward rectified current of 1.5 A. Key electrical parameters include a maximum forward voltage of 990 mV at 1.5 A, a maximum non-repetitive surge current of 30 A, and a typical reverse leakage current of 140 nA. The component exhibits a maximum reverse recovery time of 1.3 µs and operates within a junction temperature range of -55°C to +175°C.

Feature Summary

• Incorporates avalanche-rated construction for robustness against transient energy events
• Utilizes fast recovery technology optimized for high-frequency switching applications
• Designed with low forward voltage characteristics to minimize conduction losses
• Engineered for high thermal stability across extended operating temperature ranges

Applications

• High-voltage DC-DC converter circuits
• Uninterruptible power supply (UPS) systems
• Industrial motor drive rectification stages
• Power factor correction (PFC) circuits

Procurement Notes

Verify the specific suffix 'H' against the manufacturer's official datasheet to confirm compliance with RoHS directives and REACH SVHC requirements. Ensure the ordering part number matches the exact voltage and current ratings required for the target application circuit design.

Selection Notes

Select this component when designing circuits requiring high-voltage blocking capabilities combined with fast switching speeds. The DO-219AB package is suitable for space-constrained surface-mount layouts. Consider the avalanche rating if the application involves significant inductive load switching or potential voltage spikes exceeding standard breakdown limits.

Part Context

This component belongs to the AS1F series of fast recovery rectifiers from Vishay. The series offers various voltage ratings tailored for general-purpose rectification in compact electronic designs. The AS1FG variant specifically addresses applications demanding higher voltage withstand capability while maintaining efficient recovery characteristics.

Replacement Considerations

Consult Vishay documentation for direct cross-reference equivalents. Verify that any substitute maintains the DO-219AB footprint, 800 V reverse voltage rating, and 1.5 A current capacity to ensure mechanical and electrical compatibility.